Multigraphing attachment for printing presses



March 1, 1932. F, GODDARD 1,847,478

MULTIGRAPHING ATTACHMENT FOR PRINTING PRESSES Filed June 17, 1930 2 SheetS+Sheet 1 I ll n h u u l| II II r L 9 7,1 TOR.

A TTORNEYS,

March 1, 1932. M, G D 1,847,478

MULTIGRAPHING ATTACHMENT FOR PRINTING PRESSE S Filed June 17, 1930 2Sheets-Sheet 2 A; INVENTOR. BY

A TTORNEYS.

Patented Mar. 1, 1932 UNITED STATES ,VPIATENTJ ERANcIs IvI. eonnARn'orDENVER, COLORADO, Ass IeNO T uIoHN .IQSUTTON; or DENVER, COLORADO I jMULTIGRAPHIN'G ATTACHMENT FOR- rRINTING rREss s Application filed nine17, 1939.

invention relates to printing presses. An important object of theinvention is to provide means to imitate typewriting on an ordinaryplaten printing press. 7 Another object of the invention is to providemeans on such a press whereby the heading may be printed as usual, andat the same time the body of the letter printed to imitate a typewrittenletter.

A. further object is to provide a ribbon attachment, for printingimitation typewritten letters, that will utilize the ribbonover itsentire width and avoid using it sections only. 7 A still further objectof the invention is to provide simple and eifectivemeans for advancingand reversing a ribbon comprised in the invention, while the ribbon isaway from the type. Other objects reside in providing practical meansforcarrying out the foregoing objects.

Novel details of construction and novel combinations and arrangements ofparts'will appear in the course of the following scription. It is alsotobe understood that this specification only covers an embodiment of thepresent invention andthat changes may be made without departing from thescope and spirit of the invention.

In the drawings, like reference characters designate similar parts inthe severalviews.

Figure 1 is a plan view of an embodiment of the present invention.

Figure 2 is an enlarged elevation'looking in the direction of the arrowA in Figure 1. Figure 3 is an enlarged section taken on the line 3-3 ofFigure 1. Figure 4: is a section similar to FigureB, but showing theparts in different operative positions. Figure'5 is of Figure 2. I vReferring more specifically to the drawa section taken on the line 5 5ings, the reference numeral 6 generally designates frame applied to aprinting press, the platen of which is indicated in dotted lines at 7 inFigure 2. The position of type faces is indicated at 67 with relation tothe platen and ribbon. i

One side 8 of the frame is parallel with de- I Serial No. 461,719.

an end of the platen. edges of the other threesides of the frame are outof parallelwith the adjacent edges and ends of the platen 7 Spools 9and10 for a ribbon.:12 are mounted onshafts 13 and 14- supported in bearingbrackets 15 and 16 on the outer edges of side members and 18 of theframe. Said'edgesare parallel with eachjother, andas stated are out: ofparallel with the edges of the platen.

Therefore, the spools 9 and 10 but the ribbon travels obliquelyacross'the platen. .This arrangement 1 produces even wear across thewidth of the ribbon. If'the ribbon traveled parallel with the lines oftype, there would be worn'sections and in between such sections theribbon would be untouched as is the case with machines now in use. Thisfeature is adaptableto numerous printing machines now known. -j 1 Thegripper arms'used on platen-presses are moved inward toward each'otherand bolts 19 fasten the frame 6 to the samecross bar (not shown) towhi'chthe gripper arms are-bolted. Strengthening ribs "20, shown inFigure 1, are approximatelyin the positions usually occupied by thegripper arms before they'are 'mov'ed inwardlj 3 The operating mechanismfor the shafts 13 and 1450f the ribbon spools includes a counter shaft21" extending the width of the frame and carrying right and left-handworm gears 22 and 23 near its ends. gears 24 and 25 loosely mounted onthes'po ol shafts 13 and l l resjaectively. arefbetween head 26, keyedonsaid shafts, and friction rings 27. The rings 27 have integralbushings ,68 upon I'vhich the gears24-and 25 rotate and upon which the.heads 26. are mounted. i 7

A headed bushing 28 is provided for the portions ofthe shaft'sQliiandlethat'projectthrough side member 29 of the frame. Springs '30. and 31coiled around the shafts 13 and 14' respectively abut against a collar3201i the shaft and-a washer 33 that' is at the end of'the'bush'ngj28"and engaging one of the'flanges 34 of the bearing bracket 16; Y

The worm gear 22 is disposed betweenb'e'ai' A s shown, the outer IKAT-M,

ings and 36, and the worm 23 is between bearings 37 and 38.

A loosely mounted, elongated gear 39 is provided between a shouldermember 40 on the counter shaft 21 and a collar 41 keyed on the shaft,and; hasratchet teeth 42 atits end. The toner; 41. also hasratchet teeth43 to engage the teeth 42 on the collar, A Se es 4. be ween. th. sh ulde40 and gear39; urges the ratchetvtee-th of thecollar A bearing and thegear into engagement.

45 is provided adjacent. tothecollar.

spring-urged toggle is connected with the counter shaft 21 to holdonebathe-other 0f the Worms in engagement with itsr-espectogglecomprisesa pivtivezspu gear i otedi arm. actuated! by. a.spring 47. A link- 48piito'tallyconnects the arm with a dog49;mountedionjthejshaft between collars 50 that. are; fastened; on. the.counter shaft 21. Bearings. 45: and 51: limit; movement of thecollarsfifls V A; lever.52 ,pi.voted. on ascrew 53, has atoneendesegmental te.eth.54 engaging the .gear

I 39. Theotherendjhasa. flange 55: disposed underthe; platen,

whereby: movement of. the :fnamorrelatiyesto the platen moves theleverafter eaohimpressionof; the press. A; coil spring 58;;around;a-boss..59on; the lever tends to returnthc everto-itsloriginal position each time;The springiisshooked around; a finger 60 on therfrflanoand'projectthrough anopem ngs n .thelever, as..shown1at61;

Asstated;thespur,gears24,:andr25areloosely mounted on bushings 68.-onthe shafts; 13

and; 4-. Howeve s each. gear carries. OP- posi cly d posed: pins: 2- dipo ecl' t ab t g inst cros pi 63: Ea of: he. ro

passes; through; the. shaft, through the a hin fit and hreught h l he dsfi, keyi aidznaits nthe ha t e e d at Ma e n ing.,.6 .;aro 1nd he os Qste d; o one of the ns-@Zmnt-he pu s an ncli he hae nd. s stened o. heress pin. i' nr ag-.h eamari an n the p itien shown- 'in iure.4,wherebythe. initial at-Whets t,-. e;a a a t h w m- I gages. it,.fdo es o t rotate the. shaft. In fact,

the gear may r ate, approximately one-.lialf eaolfi i'cia befei l hecross p nt? engages the pins, 62.:on .the gear again, to impart ro a-15C. iiiq ato hes i l 'lm he oneli tiqaot hein en n, h i on ravs a t1i9rt bli ly. r ss the type and-is automatically reversed atthe ends bythe nechanism described. 7 i

In applying the presentinvention to a printing press, theink 1 rollers,of the press be partly out awayso that theywill .not

3; ink the. that.- is. inked by. the. ribbon .12.

.weven. lD,-. QmBe D DC S,- it @migh be. advi ab e-to nl l lh t the-lyrey. he. llers il-therm l: n hi i etterew yst an r es'e ea e hee bbq e rle snk: he ate The ribbon is advanced a slight bit between eachimpression of the printing press, through the intermediary of the flange55 under the platen by the movement of the frame 6 away from the platen.The movement of the ribbon takesplace not only between impressions butalso'when the. ribbon is away from the type. During the advancingmovement of the ribbon, it is not dragged across the type, as is usualwith ribbon printing apparatus, because the frame 6 moves away from thetype faces between impressions, as shown in Figure 6.

Thelever teeth 54rotate the gear 39 a part of a revolution after eachimpression. When thelener is. released, the spring 58:returns the leverto;its, original; position. Rotation of thegear, is communicated'to thecollar 41 and thereby tothe counter shaft 21- by means fa t e tcheta ceh finn fli h spring 44maintainsthese teetl in engagement. Thecounter;shaft2l operates the worms, whose movement is. impartedto thespools through the gears 24 and 25 and through shafts 13 and;14; Thesprings 30 and-3Lhold the friction rings 27, incontact with-thevheadsoofthe bushingsQ S. to resist rotation of the spools.

hisrresistan ce holds theribbon taut.

e springurged toggle holds one orthe other ofthe .wormsinengagementwithits respective spur gear, and moving one wormout ofengage nent andtheother into engagement isnopposedvby the spring47 on the toggle arm.

opposition, holdsnthe mechanisnrin an operat ve position during movementof. the ribbon.

The ribbon .isfastened to the goods byv any suitable or; conventionalmeans, so that when the ribbon reachestheend, further rotation inthesame direction is. prevented.- Continued rotationof. the worms bycontinued operas tionof the press, will rotate the worm out ofengagementiwithits spur. gear,- whereby to causeengagementqof the otherworm withits spur ge ar, toreverse the movement of the hhe Toapreventthetog le fron'rstopping at dead center, there is period during thereversing operation thatboth wormsare in ;engagement withtheir gea rs.;But the worms do iiot pull the ribbon in opposite directions, due to thefree movement of the spur gears during a portion of their rotation. BothWQIIllS ttlBf n t in engagement long enough to rotate the shafts 13and14in opposite directions V After the shaft is moved beyond dead center ofthe toggle, the spring 47" snaps one worm out of engagementand moves theother into a positionewhereby the pins 62 and 63 are in engagement. Thusthe reversal of the direction of movement of the ribbon is automatic. y

The present invention has. been foun'd'to operate .very satisfactorilyinactual practice,

nd the printed product is a striking likeness f typewriting, while otherparts of work are minted as usual, all in a single operation.

What I claim and desire to secure by Leters Patent is:

1. An attachment for printing presses, com-' )rising a frame, ribbonspools on the frame, lriving shafts for the spools, gears on the ;hafts,driving gear means arranged to engage either of the first mentionedgears, the driving gears being disposed in one position tosimultaneously engage both of the firstmentioned gears and adapted bycontinued movement to move out of engagement with the one and intoengagement with the other of the first-mentioned gears, at least one ofthe gears having a free movement on its shaft during the simultaneousengagement, a spring to return'the free moving gear to a redeterminedposition when disengaged from its respective driving gear, and springmeans tending to hold the driving gears in engagement with therespective shaft gears.

2. An attachment for printing presses, comprising a frame, ribbon spoolson the frame, driving shafts for the spools, gears loose on the shafts,abutments on the shafts and gears limiting relative movements of thegears and shafts, driving gears adapted to engage either or both of thefirst-mentioned gears, the abutments being arrange whereby the one orboth of the gears rotate freely on the shaft during the simultaneousengagement, the driving gears being adapt-- ed to move out of engagementwith one or shafts, and thereby move the ribbon, in opposite directions,said means including gears at least one of which has a limited freemovement on its shaft and driving gears to rotate the first-mentionedgears, the driving gears being in engagement with both of thefirst-mentioned gears during a period in the reversing operation andsaid free movement preventing the spools from pulling the ribbonsimultaneously in the opposite directions.

In testimony whereof I hereunto afiix my signature.

' FRANCIS M. GODDARD.

the other of the first noted gears by continued rotation.

3. An attachment for printing presses, comprising a frame, ribbon spoolson the frame, driving shafts for the spools, gears having limitedmovements on the shafts, driving gears for the first-mentioned gears,and springs to return the first-mentioned gears to predeterminedpositions after being disengaged from their respective driving gears.

4. An attachment for printing presses, comprising a frame, ribbon spoolson the frame, driving shafts for the spools, gears on the shafts,driving gear means arrange to engage either of the first-mentionedgears, the driving gears being disposed in one position tosimultaneously engage both of the first-mentioned gears and adapted bycontinued movement to move out of engagement with the one and intoengagement with the other of the first-mentioned gears, at least one ofthe gears having a free movement on its shaft vduring the simultaneousengagement, and spring means tending to hold the driving gears inengagement with the respective shaft gears.

5. A printing press comprising rotary shafts, spools on the shafts, aribbon on the spools, and reversible means to rotate the

